Blood is a fluid which presents in human and animals through which transportation of different essential substances from one part to another. Blood contains 55% plasma along all blood cells. Plasma is yellowish fluid which contains about 92% of water by volume. It is the main compound in blood which makes blood in fluid state. The Ph value of blood is 7. 4. The main feature of blood is to transport different materials throughout our body. It works like connective tissue, that's why why our body our body is full of nerves, arteries, and veins. Our blood transport throughout our body by the pumping action of our Hearts.
Functions of blood
● Transportation of oxygen throughout the body- Blood contains hemoglobin which collects oxygen from the air which we inhale in our lungs, and pump them to all part of our body. When oxygen (O2) react with glucose (C6-H12-O6). In result of this chemical reaction carbon dioxide (CO2) and water (H2O) produces, where carbon dioxide (CO2) have not any work for our body, so it is again collected by our blood and transported to our lungs, then lungs exhale them out.
The blood which flows in arteries are light red in colour because it consist oxygen in it. And blood which flows in veins are dark red because it consist deoxygenated blood.
● Blood prevents us from get sicked- Blood contains White blood cell (WBC) which is a main component of our immune system. The colour of WBC is white so it's called white blood cell. It is also known as 'Leukocytes'. It's form in our bone marrow in 'multipotent cells'. It is only one percent of our total blood volume. The number of lekocytes (WBC) in blood indicates the immune power of a human that's why the leukocytes count as an important cell of blood. The normal count of WBC in an average human (adult) is 4,000 to 11,000 per microliters of blood.
● Supply of nutrients- Blood supply different nutrients to our body according to their need.
Example: Glucose, Amino acid and fatty acids.
● Remove waste materials- Blood removes different waste materials which form during different chemical reactions in our body. Such as carbon dioxide, urea removes from our body with sweats. When their is shortage of oxygen in any part of our body due to which that part start making energy without oxygen and in product there is lactic acid also form which is waste for our body.
● Coagulation- Blood response to broken blood vessels and transform blood from liquid to semisolid gel to stop bleeding.
● Act as massenger- Blood transport different harmones from secreting gland to other part of our body.
● Maintaining body temperature- Blood maintain our body temperature. [ Normal body temperature of human body is 32℃ or 98.6°F]
● Working of hydrolic system of body- Blood is also responsible for movement of our mussles.
Red Blood Cells
Red blood cells present 40%-45% of total blood volume. Red Blood Cells are generated from bone marrow at a rate of four to five billion per hour. They have a lifecycle of about 120 days (approx 4 months) in the body.
Platelets
Platelets are an amazing part of our blood. Platelets are the smallest of our blood cells and literally look like small plates when they are in non-active form. It controls bleeding. Wherever a wound occurs, the blood vessel will send out a signal. Platelets receive that signal and travel to the area and transform into active formation, growing long tentacles to make contact with the vessel and form clusters to plug the wound until it heals. It is very essential for our body.
Plasma
Plasma is the liquid portion of our blood. It is yellowish in color and it is made up mostly of water (about 90%), but it also contains proteins, sugars, hormones and salts. It transports water and nutrients to our different body tissues.
White Blood Cells
Although white blood cells (leukocytes) present in very less amount in our blood (only account for about 1% of our blood), whenever they are very important. It is very important for good health and protection against illness and disease. Like Red Blood Cells, it is also being generated from our bone marrow. White Blood Cells flow through the bloodstream and attack foreign bodies (organism), like viruses and bacteria. They can even leave the bloodstream to extend the fight into tissue.
[ Extra fact : AIDS is disease which is cause by HIV viruses this Disease makes our WBC weak or dead. Due to which a human who have HIV gets any disease instantly]
Thanks for reading, send your questions, suggestions and response to us from our contact us page.